Support for spinning-spindles



(No Model.)

W. F. DRAPER. SUPPORT FOR SPINNING sPINDLEs.

HHE

NrrEn STATES PATENT OFFICE.

SUPPORT FOR SPINNING-SPINDLES.

SPECIFICATION forming part of Letters Patent No. 442,427, dated December9, 1890.

Application filed March 2'7, 1890. Serial No. 345,512- (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM F. DRAPER, of Hopedale, county of Worcester,State of Massachusetts, have invented an Improvement in Supports forSpinning-Spindles, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters on thedrawings representing like parts.

Bolster-bearin gs for spindles are commonly mounted in supporting-casesin such manner that they are capable of lateral motion with the spindleto a limited extent, and such b01- sters have been surrounded by anelastic or fibrous packing; but packing has the objection that while itacts as a cushion it may offer too much resistance, and the resistancevaries in diiterent spindles and by use.

In this invention it is especially desired to provide means whereby acylindrical loose bolster may be held against lateral movement by ameasured resistance applied through a coiled or elastic spring, theeffective force of which may be varied to thereby hold the lower end ofthe bolster seated in the socket in the supportingease according to thework to be done.

The herein-described bolster, when started to move laterally, maycontinue to move until the bolster contacts with the supporting-case.

As represented, the bolster has combined with it a step which partakesof the move ment of the bolster.

Figure l, in elevation and section, shows a sleeve-wl'iirl spindle andsupport therefor embodying my invention; and Fig. 2 shows a modifiedform for the step end of the bolster.

The rail A. has erected upon it the supportingcase B, inside of which isplaced loosely a cylindrical bolster-bearing C, the said bolster-bearingbeing herein shown as having a step integral therewith.

The spindle D and its slecve'whirl I) are of usual shape.

The upper end of the bolster is shown as terminating some distance abovethe bandrcceiving part of the sleeve-whirl, and the said end receivesagainst it one end of a coiled or elastic spring a, the upper end ofwhich is acted upon by an adjusting-nut Z), screwed into the upper endof the bolstercase, the rotation of the said nut to screw it into thesaid case compressing the said spring more or less, so that the lowerend of the bearing or step part thereof is pressed with more or lessforce against a fixed part of the structure. as the bottom of the socketor chamber in the supporting-case, to thus exert or offer a measuredamount of resistance to the lateral movement of the spindle and bolster,and also prevent it from rotating at the same speed as that of thespindle.

Prior to my invention I am not aware that a cylindrical bolster within asupporting-case has ever been restrained as to its lateral mo vement,and also its rotation by a spring pressing against the bolster near itsupper end, thus pressing the lower end of the bolster against a fixedpart of the supporting-case.

The bottom of the bearing 0 may be come shaped, as in Fig. 1, orrounded, as in Fig. 2, in order that when the bolster is moved laterallywith the spindle the bolster will be somewhat lifted, thus furthercompressing the spring a, which causes it to have greater resistance,the lateral movement of the bolster, when takin g place, requiring aforce sufficient to compress the spring, the latter forming a yieldingdrag; and, further, in order to move laterally, the weight of thebolster and that of the spindle and its load has to be overcome. The nut12 constitutes an adjusting device for the spring.

It will be noticed that the external diameter of the cylindrical bolsteris somewhat smaller than the internal diameter of the chamber in thesupportingcase, so that the bolster and its connected step has a loosetit in the supporting-case, the bolster and chamber beingof such sizethat the extent of looseness or fit is substantially the same for aconsiderable distance above and below the center of the whirl, so as toenable the bolster and the spindle therein to maintain a substantiallyvertical position during their lateral movement.

\Vhen the bolster is moved laterally to contact with the supporting-casethe said bolster is supported laterally by the inner wall of the saidcase.

I am aware that a bolster having a flange or collar between its ends hasbeen seated on a washer contained in a supporting-case, another Washerresting on the upper side of the collar being acted upon by a spiralspring. Such a bolster will tip 011 its seat, but will not movelaterally in the same way as the bolster herein shown and described.

I am also aware that a collar on a two-part bolster has been acted uponby a spring, the lower end of the said bolster bearing against the upperend of the lower or step part of the bolster. which is supported on aspring in the bottom of the supporting-cas I claim 1. The sleeve-whirlspindle, the supportingcase, and the cylindrical bolster placed thereinloosely and supported at its lower end by the supportingcase, combinedwith a coiled or yielding spring acting upon the upper end of the saidbolster to restrain or retard the lateral movementof the said bolster inthe said case, substantially as described.

2. The sleeve-whirl spindle, the socketed or chambered supporting casehaving a concaved seat for the lower extremity or end of thebolster-case, and a cylindricalconnected bolster and step having aconvexed lower end to rest on said seat and loose laterally Within thesaid case fora considerable distance above and below the center of theWhirl, so as to enable the bolster with the spindle therein to maintainsubstantially a vertical position during theirlateral movement, combinedwith a spring acting against the upper end of the said bolster andrestraining the lateral motion of the said bolster by a force measuredby the spring, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM F. DRAPER. Witnesses:

GEO. W. GREGORY, EMMA J. BENNETT.

